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Elastic vs. Plastic Section Modulus

Traditionally, civil engineers base design guidelines on elastic section modulus. If you see a section modulus number cited without reference to whether it is plastic or elastic, then the general rule is that this is elastic section modulus. In the rare instances when plastic section modulus is used, the word “plastic” almost always explicitly precedes section modulus. Plastic section modulus is usually used to calculate according to the plastic method and to determine the plastic capacity of cross-sections. The elastic and plastic resistance values are different, and the calculation results may be different.

Steel vs Concrete Tool

Enter your wall dimensions and the values below will adjust automatically.

ft
ft
retaining wall type construction days total cost cost per linear ft cost per square ft
Steel Sheet Pile Wall 47.69
Soldier Pile and Lagging Wall 90.45
Concrete Modular Unit Gravity Wall 76.18
Mechanically Stabilized Earth Wall 95.58
Cast-In-Place Reinforced Concrete Wall 136.09
Slurry Wall 210.60

Approximate cost and construction time for different wall types is based on 2009 RSMeans pricing for the US and extrapolated from the 2009 NASSPA Retaining Wall Comparison Technical Report,

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Request a Quote

Our business is to help you find and buy a better and more efficient SSP system that meets your needs for less money!

The best way for us to help you is to get a dialog going, which can include the following:
A) Share job details as specified in remarks section below
B) Sharing desired lifespan of the system
C) Designating an environment the project will be installed in, for example fresh water bulkhead or a salt water port
D) Providing a Bending Moment OR alternatively, a Section Modulus and steel grade or the specific ssp section that may be specified

So please fill out the form below with details to the best of your knowledge, and our staff will contact you for a confidential, 1-on-1 consultation or contact us directly: 866.666.7453 or +1.512.243.1228 or info@isheetpile.com

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OR bending moment capacity OR section modulus